2004 ISUZU TF SERIES ignition
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ON-VEHICLE SERVICE (AW30 –40LE) 7A3-43
Removal
NOTE: Before removing transmission and transfer
assembly from vehicle, change the transfer mode to
2WD using the 4WD push button switch on dash panel.
1. Disconnect battery ground cable.
2. Raise and support vehicle with suitable stands.
3. Remove front propeller shaft.(4WD only)
NOTE: Apply alignment marks on the flange at both
front and rear sides.
4. Remove rear propeller shaft.
NOTE: Apply alignment marks on the flange at the
differential side.
401RS023
5. Remove the middle exhaust pipe.
RTW37ASH0001
6. Disconnect the transfer harness connectors and the
clips.(4WD only)
Speed sensor
2W-4W shift actuator
NOTE: Avoid turning the vehicle ignition switch to the
ON position when the 2WD-4WD connector is removed
(battery connected).
If the ignition switch must be turned to the ON position,
the controller must first be removed (memory must be
cleared because the CHECK 4WD INDICATOR will
light).
7. Support transfer case with a transmission jack.(4WD only)
8. Remove the transfer case assembly from the
transmission.(4WD only)
9. Disconnect the shift cable.
10. Remove the fuel pipe clips with the fuel pipes from the brackets and put aside it. Remove the fuel pipe
brakets from the transmission.
P1010010
11. Discinnect the transmission harness connectors
and clips.
12. Remove the oil level gauge and the guide tube.
13. Remove the suspension crossmember.
Page 3952 of 4264
7A1-6 CONSTRUCTION AND FUNCTION
ELECTRONIC CONTROL COMPONENTS LOCATION
4WD Only 4WD Only
Instrument panel (Meter)
Speed meter (2WD Only)
Shift position indicator lamp
POWER DRIVE, 3rd START
indicator lamp
A/T OIL TEMP indicator lamp
CHECK TRANS indicator lam
p
Brake pedal
Brake Switch
Select lever
Power Drive
, 3rd Start select switch
Transmission Control Module (TCM)
Electrical source
Ignition
Battery voltage
Speed sensor
Turbine sensor
Inhibitor switch
ATF thermo sensor
High clutch oil pressure switch
2-4 brake oil pressure switch
Low & Reverse brake oil pressure
switch
Line pressure solenoid
Low clutch solenoid
High clutch solenoid
2-4 brake solenoid
Low & Reverse brake solenoid
Lock-up solenoid
Transmission
Transfer Control Module
Transfer
4L mode switch
Engine
Engine speed sensor
Throttle Position Sensor
Engine Control Module (ECM)
Data link connector
Page 3971 of 4264
CONSTRUCTION AND FUNCTION 7A1-25
TRANSMISSION CONTROL MODULE (TCM)
The TCM is fitted side of brake pedal by means of two stud bolts.
The TCM judges necessary line pressure, gear shifting point and lock-up operation based on electrical
signals from switches and sensors and sends appropriate signals to solenoids.
Connect to White Connector Connect to Grey Connector
Figure 49. Pin Assignment
Pin No. Pin Assignment Pin No.Pin Assignment
B1 2-4 Brake Oil Pressure Switch A1 V BATT (Battery Back-up Power Supply)
B2 2 Range Switch A2 P Range Switch
B3 Turbine Sensor A3 Brake Switch
B4 ATF Thermo Sensor A4 3rd Start Indicator Lamp
B5 Ground A5 K-Line Signal (Tech 2 Serial Communication)
B6 Low & Reverse Brake Duty Solenoid A6 No Connection
B7 2-4 Brake Duty Solenoid A7 Engine Speed Sensor
B8 High Clutch Duty Solenoid A8 No Connection
B9 Low Clutch Duty Solenoid A9 No Connection
B10 N Range Switch A10 Vehicle Speed Sensor Out (2WD Only)
B11 D Range Switch A11 3rd START Select Switch
B12 Low & Reverse Brake Oil Pressure Switch A12 4L Mode Switch (4WD Only)
B13 Vehicle Speed Sensor A13 No Connection
B14 ATF Thermo Sensor Ground A14 No Connection
B15 Ground A15 No Connection
B16 No Connection A16 Throttle Position Sensor
B17 Lock-up Duty Solenoid A17 3 Range Switch
B18 Vign Ignition Power Supply) A18 DIAG Switch (Test Switch)
B19 R Range Switch A19 A/T OIL TEMP Indicator Lamp
B20 High Clutch Oil Pressure Switch A20 CHECK TRANS Indicator Lamp
B21 L Range Switch A21 POWER DRIVE Indicator Lamp
B22 Ground (Shift Solenoid) A22 No Connection
B23 Line Pressure Solenoid A23 No Connection
B24 Vign (Ignition Power Supply) A24 POWER DRIVE Select Switch
Page 4013 of 4264
DIAGNOSIS (JR405E) 7A2-21
SERVICE PROGRAMMING SYSTEM (SPS)
The procedure to program the control unit by using Service Programming System (SPS) software contained in TIS
2000 is explained in steps below.
Important: Perform the following checks before attempting to program the control unit:
The Tech 2 PCMCIA card is programmed with the latest software release.
The latest release of TIS2000 is located on the PC.
The vehicle battery is fully charged.
The control unit to be programmed is connected to the vehicle.
1. Preparations of TIS 2000
1. Connect Tech 2 to P/C.
2. Check to see if Hardware Key is plugged into Port.
3. Activate TIS 2000 by P/C.
4. On the activating screen of TIS2000, choose "Service Programming System"
5. On the screen of "Diagnostic Tester and Processing Program Selection", choose the one that will comply with
the following.
Diagnostic Tech2 in use
New programming by the existing module or new programming by the replaced/new module.
Fixing position of the control unit.
6. Upon completion of the selection, push the button of "Next".
2. Demand of Data
1. Connect Tech-2 to the vehicle. When activated by turning on the power of Tech-2, push the "Enter" switch.
2. Turn on the ignition switch (without starting the engine).
3. In the main menu of Diagnostic Tester, push "F1: Service Programming System (SPS)".
4. Push "F0: Request Info" of Tech-2.
5. Where vehicle data has been already saved in Tech 2, the existing data come on display. In this instance, as Tech-2 starts asking whether to keep the data or to continue obtaining anew data from the control unit,
choose either of them.
Page 4014 of 4264
7A2-22 DIAGNOSIS (JR405E)
6. If you select “continue”, you have to select “Model Year”, “Vehicle Type”.
7. After that, push button and turn Ignition switch tuned on, off, on following Tech-2 display. Tech-2 will read
information from controller after this procedure.
8. During obtaining information, Tech-2 is receiving information from the control unit ECM and TCM at the same
time. With VIN not being programmed into the new control unit at the time of shipment, "obtaining
information" is not complete (because the vehicle model, engine model and model year are specified from
VIN). For the procedure get additional information on vehicles, instruction will be provided in dialog form,
when TIS2000 is in operation.
9. Following instructions by Tech-2, push the "Exit" switch of Tech-2, turn off the ignition of the vehicle and turn
off the power of Tech-2, thereby removing from the vehicle.
3. Data Exchange
1. Connect Tech-2 to P/C, turn on the power and click the "Next" button of P/C.
2. Check VIN of the vehicle and choose "Next".
3. Select “Transmission” in the “System Type” selection.
4. When a lack of data is asked from among the following menu, enter accordingly.
Select following Menu
Model Year
Model
Engine type
Destination code (vehicles for general export)*1
* 1: How to read the destination code:
Destination code can be read from service ID Plate affixed on vehicle, while on service ID Plate the destination
code is described at the right-hand edge of Body Type line. In the figure, the destination code can be read as "RR3"
for Australia.
Page 4015 of 4264
DIAGNOSIS (JR405E) 7A2-23
4. After choosing the data, click the "Next" button.
5. When all the necessary information is entered, the "details" of software within the database that match the
entered data will appear for confirmation. Click the "Program" switch and then download the new software
onto Tech-2.
6. "Data Transfer" comes on display. The progress of downloading will be displayed on the screen in the form of
bar graph.
7. Upon finishing the data transfer, turn off the power of Tech-2, removing from P/C.
4. Programming of TCM
1. Check to see if batteries are fully charged, while ABS connectors shall be removed from the vehicle.
2. Connect Tech-2 to Vehicle Diagnostic Connectors.
3. Turn on the power of Tech-2 and the title screen comes on display.
4. Turn on the ignition (without allowing the engine to start)
5. On the title screen of Tech-2, push the "Enter" button.
6. Choose "F1: Service Programming System" on the main screen and then choose "F1: Programming ECU".
7. While data is being transferred, "Programming in Progress" will be displayed on the Tech-2 screen.
8. Upon finishing the data transfer, Tech-2 will display "Reprogramming was Successful". Push the "Exit" button
to bring program to completion.
9. Following "Procedure 2: Demand of Data", try over again "Information Obtaining" and check to confirm if the
data has been correctly re-loaded.
10. Upon finishing confirmation, turn off the ignition of the vehicle and then turn off the power of Tech-2,
removing from the vehicle.
Page 4023 of 4264
DIAGNOSIS (JR405E) 7A2-31
CONNECTOR LIST
TCM
No. Connector face No. Connector face
B-23
Green
Meter-A B-73
SilverWeld splice 3 (Earth)
B-24
Green
Meter-B C-2
SilverEngine room-RH ground
B-50
White
Power/3rd start switch C-44
WhiteStop lamp switch
B-54
White
J/B I2 C-56
(4JH1-TC)
ECM-A
B-56
White
J/B I4 C-57
(4JH1-TC)
ECM-B
B-58
Black
Check connector C-94
(6VE1)
(4JH1-TC)
Gray TCM
B-62
White
Ignition switch (IGSUB : G1) C-95
(6VE1)
(4JH1-TC)
WhiteTCM
B-63
White
Ignition switch (IGSUB : G2) C-107
WhiteJ/B E2
B-64
Silver
Weld splice 1 (Illumination) C-109
SilverBody-LH ; ground
B-68
(4JH1TC,
6VE1)
White Immobilizer C/U E-10
SilverEngine; ground
Page 4058 of 4264
7A2-66 DIAGNOSIS (JR405E)
Step Action Yes No
1 Clear the DTC from the memory once.
Was the action complete?
Go to Step 2
Refer DTC clear
method in this
manual.
2 Turn the ignition switch off once, then restart the engine and shift to
4th gear in the D range. When about 10 seconds elapsed, does the
CHECK TRANS lamp blink?
Go to Step 3 Go to Step 7
3 Is the DTC P0753 (31) Low & Reverse Brake Duty Solenoid Failure
stored? Go to P0753 (31)
Section Go to Step 4
4 Connect the Tech 2 and select the item for low & reverse brake
pressure switch. Is the indication of low & reverse brake pressure
switch turned off when the terminal assembly connector is
disconnected?
Go to Step 5
Repair the harness
or connector.
Go to Step 12
5 Turn the key switch off and disconnect the terminal assembly
connector. Are the pins correct?
Go to Step 6
Repair the
connector or pin.
Go to Step 12
6 Remove the oil pan. Is the continuity correct between terminal
assembly terminal 12 and low & reverse brake pressure switch
connector?
12
Repair the harness
or connector.
Go to Step 12
Replace pressure
switch.
Go to Step 12
7 Start the engine and select the R range. When about 10 seconds
elapsed, does the CHECK TRANS lamp blink?
Go to Step 8
Go to P0753 (31)
Section
8 Connect the Tech 2, and with the key switch in OFF position, short
the terminals 11 and 12 on the vehicle harness side. Does the
indication of the low & reverse brake pressure switch on the Tech 2
becomes on when the key switch is turned on?
Go to Step 9
Repair the harness
or connector.
Go to Step 12